hi guys this is my first instructable i hope you'll enjoy it !!

Got sick of the high prices of Home Security systems ??
have old mobile sets don't know what to do with ?
build a cheap alarm system that will notify you on your mobile by SMS.
ready ??

grab the tools !

Step 1: What you'll need

An old mobile phone set with supply (charger).
Cheap door magnetic alarm (can be replaced by a magnetic switch and a magnet ).
5 volts Relay.
Soldering iron.
wires and thin insulated copper wires.
micro driller.
micro screwdriver set.
Scotch tape.

About This Instructable


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Bio: My name is Mostafa I live in Cairo, Egypt and I'm Egyptian, I'm an Engineering Student, Department of Energy and renewable Energy at ... More »
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